Raytheon Co., Tucson, Arizona, is awarded a $17,982,837 cost-plus-fixed-fee modification (P00013) to a previously award contract (N0001922C0067). This modification adds scope and increases ceiling to provide continued studies involving future updates to the AIM-9X missile system in conjunction with the AIM-9X Block II and Block II+ System Improvement Program Increment IV for the Navy, Air Force, Army, and Foreign Military Sales customers. Work will be performed in Tucson, Arizona, and is expected to be completed in June 2026. Fiscal 2024 research, development, test and evaluation (Navy) funds in the amount of $300,000 will be obligated at the time of award, none of which will expire at the end of the fiscal year. Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.